Fenómenos de envejecimiento (degradación, erosión) en los polímeros dentales
- Soler Ruíz, J.I.
- Ellacuría Echevarría, J.J.
- Arellano Cabornero, A.
- García López, A.
ISSN: 1138-123X
Year of publication: 2001
Volume: 6
Issue: 4
Pages: 407-413
Type: Article
More publications in: RCOE: Revista del Ilustre Consejo General de Colegios de Odontólogos y Estomatólogos de España
Abstract
lntroduction: Most current dental polymers are subjected to aging phenomena witch, after a certain time of use in the oral environment, lead to changes in the mechanical, aesthetic and dimensional properties of these materials. The consequence is the premature replacement of the restoration. These phenomena show a slow global evolution. They are initiated by the uptake of water, with the subsequent degradation, and conclude with surface cracking, chipping and erosion. Objetive: The aim of the present article is to evaluate the basic mechanisms involved in this process. Conclusions: Aging is a multifactorial process, difficult to predict, with a different behaviour in vivo and in vitro. However, the development of an «acceleration coefficient» would contribute greatly to calculate the real life of a certain material.